Question
From central california  High summer heat,low humidity.  I have a couple of crape myrtyle (don't know species)  with sticky residue and curling brown leaves, and lots of webs(don't see any insects). Any ideas to solve problem?

Answer
Hey,Bruce                                                                      It sounds like u have a spider mite problem.they r very tiny n would b hard to c! Go to home depot n or your garden n pick out a product that is labeled 4 mites n spray n repeat in 10 days n u will b fine!!Then u may want treat with a fertilizer with a N/P/K# like 10/10/10 which will help stressed plant plus promote new growth